Results 21 to 30 of about 1,780,109 (186)

On the relationship between auroral absorption, electrojets currents and plasma convection [PDF]

, 2009
In this study, the relationship between auroral absorption, electrojet currents, and ionospheric plasma convection velocity is investigated using a series of new methods where temporal correlations are calculated and analysed for different events and ...
R. A. Makarevich, Makarevich, R. A., Kellerman, A.C., A. C. Kellerman, F. Honary, T. L. Hansen, Makarevich, R.A., Honary, F., Hansen, T.L., Hansen, Truls Lynne, Kellerman, A. C.   +10 more
core   +2 more sources

Magnetospheric signatures of ionospheric density cavities observed by Cluster [PDF]

, 2015
AJBR ackowledges support from STFC under consolidated grant ST/K000993/1.We present Cluster measurements of large amplitude electric fields corre- lated with intense downward field-aligned currents, observed during a nightside crossing of the auroral ...
Wright, A. N., Karlsson, Tomas, A. J. B. Russell, A. N. Wright, T. Karlsson, Wright, Andrew Nicholas, Russell, A. J. B., Karlsson, T., Russell, Alexander John Barkway, Karlsson, Tomas,   +9 more
core   +1 more source

Methodology to measure electric discharge machining (EDM) bearing currents in induction motors with supply from a variable speed drive (VSD) [PDF]

, 2013
En este artículo se establece una metodología para la medición de corrientes de rodamiento del tipo “Electric Discharge Machining (EDM)” en motores de inducción alimentados por variador de velocidad (VSD- Drive). Este artículo hace una introducción a los
Quintero Sarmiento, David Raúl, Rosero García, Javier, Mejía López, William   +2 more
core   +1 more source

Application of Perovskite Layer to Rotor for Enhanced Stator-Rotor Capacitance for PMSM Shaft Voltage Reduction

Energies, 2020
Adjustable speed drives use Pulse Width Modulation (PWM) to switch DC-bus voltage for the synthesis of three-phase voltages to provide power to the permanent magnet synchronous motor (PMSM).
Muhammad Aqil, Jun-Hyuk Im, Jin Hur
doaj   +1 more source

A Multiphase Traction/Fast-Battery-Charger Drive for Electric or Plug-in Hybrid Vehicles [PDF]

, 2010
For Electric Vehicles (EV), the charger is one of the main technical and economical weaknesses. This paper focuses on an original electric drive [1]-[3] dedicated to the vehicle traction and configurable as a battery charger without need of additional ...
BOUCHEZ, Boris, E. Semail, DE SOUSA, Luis, A. Bruyere, KESTELYN, Xavier, P. Sandulescu, SEMAIL, Eric, SANDULESCU, Paul, B. Bouchez, X. Kestelyn, BRUYERE, Antoine, L. De Sousa   +11 more
core   +1 more source

Review on Tribological and Vibration Aspects in Mechanical Bearings of Electric Vehicles: Effect of Bearing Current, Shaft Voltage, and Electric Discharge Material Spalling Current

Lubricants
Electric motors play a decisive role in electric vehicles by converting electrical energy into mechanical motion across various drivetrain components.
Rohan Lokhande, Sitesh Kumar Mishra, Deepak Ronanki, Piyush Shakya, Vimal Edachery, Lijesh Koottaparambil   +5 more
doaj   +1 more source

Method of Limiting Shaft Voltages in AC Electric Machines

Energies, 2021
The article presents a new method of counteracting shaft voltages and currents in AC electrical machines. It is based on the use of an auxiliary winding located in the stator of the machine.
Sebastian Berhausen, Tomasz Jarek
doaj   +1 more source

New Modulation Technique to Mitigate Common Mode Voltage Effects in Star-Connected Five-Phase AC Drives

Energies, 2020
Star-connected multiphase AC drives are being considered for electromovility applications such as electromechanical actuators (EMA), where high power density and fault tolerance is demanded.
Markel Fernandez, Andres Sierra-Gonzalez, Endika Robles, Iñigo Kortabarria, Edorta Ibarra, Jose Luis Martin   +5 more
doaj   +1 more source

Analysis and Control of Slotless Self-Bearing Motor

Actuators, 2019
A self-bearing motor (SBM) is an electric motor with a magnetically integrated bearing function, that is, it can provide levitation and rotation simultaneously as a single actuator.
Huy Phuong Nguyen, Xuan Bien Nguyen, Trung Tuyen Bui, Satoshi Ueno, Quang Dich Nguyen   +4 more
doaj   +1 more source

Deterioration of Mechanical Properties of Axial Compression Concrete Columns with Corroded Stirrups Coupling on Load and Chloride

Applied Sciences, 2023
To research the deterioration of the mechanical properties of stirrup-corroded concrete columns under the effect of load and chloride, accelerated corrosion and load carrying capacity tests were carried out on concrete columns subjected to long-term ...
Xiaoping Zhong, Jiahao Li, Jiahao Xu, Kailai Wang, Bingxi Zhu, Yang Liu, Keting Ni   +6 more
doaj   +1 more source